I have two Semogues: a 1250 (22 knot, 55 loft, 90% white best) and a custom limited edition (22 knot, 50 loft, Premium 90%). I'm thinking about getting an 1800 (22 knot, 55 loft, Extra 75% mixed with Premium 90%). The 1250, which I have owned and used exclusively for about five weeks now, has great flow through and creates a good lather for 2.5 passes easily. The custom brush is seven years old, and I have used it to what amounts to four months. It takes a little more effort to load and barely gets two passes depending on product used.

Will the 1800 feel significantly different from the other two brushes, especially the 1250? What about with regard to performance?

That was a great thread LLodrm! I found it surprising that he found the 1250 very similar to the SOC in feel and performance. His observations that the 1305 is the supersilvertip of boars while the 1800 is the two-band of boars is very helpful in getting an idea regarding how these brushes feel and perform.

I have an Omega 10065 in an orange/yellow color. It was the fourth brush I ever bought. It holds an equal amount of lather to the Semogue 1250 despite being a smaller brush. My Omega's ends have all split, making it have quite soft tips, while the 1250 is still getting there.

I have a 1250, 1350 and 1800, I would say they are comparable in performance and feel although I think the 1800 lags a little on lather holding. Everyone seems to love the 1350, I think I am in the minority and like my 1250 better but they are all very similar once broken in.